Which of the following is a water-soluble vitamin?
a) Vitamin A
b) Vitamin C
c) Vitamin K
d) Vitamin D (more…)
In the oil industry, one barrel of oil is equivalent to how many liters?
a) 120
b) 90
c) 159
d) 60 (more…)
The study of day-to-day variations in weather is called ___
a) Meteorology
b) Climatology
c) Cyclogenesis
d) Environment science (more…)
Science or hobby of studying the history of coins is _____?
a) Minting
b) Coinology
c) Coinage
d) Numismatics (more…)
Equinox is a unique phenomenon which means:
a) A day is shortest in a year
b) Where day and night are equal in a year
c) A day is longest in a year
d) None of these (more…)